Property, Plant, and Equipment, net (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Mar. 31, 2017
Property, Plant and Equipment [Abstract]
Equipment held for disposal					$ 600
Estimated proceeds from sale equipment, net			$ 100
Impairments	$ 0	$ 0	$ 468	$ 0